Student grades on a chemistry exam were: 77, 79, 76, 82, 86, 50, 79, 81, 83, 99
construct a stem-and-leaf plot of the data. (use the tens digit as the stem and the ones digit as the leaf. enter your answers from smallest to largest, separated by spaces. enter none for stems with no leaves.)

The value √10 and √15 are plotted on the number line

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Solve: 3x+y=6 4x-2y=18 show all work !